20958371 has 8 divisors (see below), whose sum is σ = 23998560. Its totient is φ = 17929728.

The previous prime is 20958361. The next prime is 20958383. The reversal of 20958371 is 17385902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20958371 - 2⁶ = 20958307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20958341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (2999820).

Almost surely, 2^20958371 is an apocalyptic number.

20958371 is a deficient number, since it is larger than the sum of its proper divisors (3040189).

20958371 is an equidigital number, since it uses as much as digits as its factorization.

20958371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 20958371 is about 4578.0313454584. The cubic root of 20958371 is about 275.7099934645.

The spelling of 20958371 in words is "twenty million, nine hundred fifty-eight thousand, three hundred seventy-one".